10440591813 has 6 divisors (see below), whose sum is σ = 15080854854. Its totient is φ = 6960394536.

The previous prime is 10440591787. The next prime is 10440591839. The reversal of 10440591813 is 31819504401.

10440591813 is a `hidden beast` number, since 10 + 4 + 40 + 591 + 8 + 13 = 666.

It is an interprime number because it is at equal distance from previous prime (10440591787) and next prime (10440591839).

It can be written as a sum of positive squares in only one way, i.e., 10397269089 + 43322724 = 101967^2 + 6582^2 .

It is not a de Polignac number, because 10440591813 - 2⁵ = 10440591781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10440591853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 580032870 + ... + 580032887.

It is an arithmetic number, because the mean of its divisors is an integer number (2513475809).

Almost surely, 2^10440591813 is an apocalyptic number.

It is an amenable number.

10440591813 is a deficient number, since it is larger than the sum of its proper divisors (4640263041).

10440591813 is a wasteful number, since it uses less digits than its factorization.

10440591813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160065763 (or 1160065760 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

It can be divided in two parts, 10440 and 591813, that added together give a triangular number (602253 = T₁₀₉₇).

The spelling of 10440591813 in words is "ten billion, four hundred forty million, five hundred ninety-one thousand, eight hundred thirteen".